CTET PAPER II 2019 · PYQ · Atmosphere / Geography · easy
The major constituents of earth's atmosphere by percentage is:
Answer
The correct answer is C: Nitrogen. Earth's atmosphere is composed primarily of nitrogen (about 78%), followed by oxygen (about 21%), argon (about 0.93%), carbon dioxide (about 0.04%), and trace gases including helium, neon, and others. Nitrogen is the most abundant gas by percentage in Earth's atmosphere, hence option (3) is correct.
A.Oxygen
B.Carbon dioxide
C.Nitrogen✓ Correct
D.Helium
Explanation
Earth's atmosphere is composed primarily of nitrogen (about 78%), followed by oxygen (about 21%), argon (about 0.93%), carbon dioxide (about 0.04%), and trace gases including helium, neon, and others. Nitrogen is the most abundant gas by percentage in Earth's atmosphere, hence option (3) is correct.
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